{"title":"Fairchild","description":null,"products":[{"product_id":"fairchild-663-compressor-racked-pair-used","title":"Fairchild 663 Compressor Racked Pair (Vintage)","description":"Optical compressor. Two modules in a custom rack. Includes new external power supply.\u003cbr\u003e\u003cbr\u003eThese are a much simpler solid-state version of their esteemed cousin, the Fairchild 660. They use an optical resistor in the compression circuit.","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44449486635111,"sku":"13754","price":995.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_fairchild_663_racked_pair_1556-994_front_df9c31c0-6944-49d2-adaf-426337e32787.jpg?v=1787089143"},{"product_id":"fairchild-666-compressor-vintage","title":"Fairchild 666 Compressor (Vintage)","description":"Nice example of this unit. Controls include continuously variable knobs for Compression and 'Auto-Ten' (an automatic attenuator\/noise gate), and a stepped attenuator for Line Gain from 0 to 40 db, in 5db increments. Also has two continuously-variable settings for the release times on the compression and auto attenuation, adjustable by screwdriver. Auto-Ten has its own on\/off switch on the back of the unit.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eA rare compressor from the makers of the famous 660 and 670 models. While those models are 'delta-mu' style compressors, the 666 model was Fairchild's answer to the Teletronix LA-2A opto-compressor. \u003cbr\u003e\u003cbr\u003eThe 666 is a hybrid design using tubes for the audio path and solid state circuitry for the 'Auto-Ten' noise gate. Unique sound as a vocal compressor; the 666 was an early acquisition of Abbey Road studios, and was used on many recordings by the Hollies and Gerry and the Pacemakers, and possibly some Beatles records as well. The 666 was also a regular at Motown Studios during their Detroit heyday.","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44449515274343,"sku":"14984","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_fairchild_666_cat_468aa863-e037-41a0-a514-9024046f8976.jpg?v=1787089276"},{"product_id":"fairchild-670-449-used","title":"Fairchild 670 #449 (Used)","description":"\u003cp\u003ePremium VK serviced and recapped; matching 6386 tubes, complete faceplate re-painting\/re-screening to original specs, excellent stereo alignment.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003eThe 670 is a variable-mu type compressor, using the vacuum tubes for reduction of gain right in the audio signal path, (no re-routing to a compression circuit).\u003c\/p\u003e \u003cp\u003eControls are paired for the left and right sides, and include a stepped Input Gain and continuously variable Threshold control, as well as a stepped 6-position switch for Attack and Release, that allow for four different combinations and two program-dependent settings. Set-screws on the back of the unit control the ratio; anywhere from 2:1 as a compressor to 30:1 as a limiter.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch3\u003eHistory\u003c\/h3\u003e \u003cp\u003e\u003cbr\u003eThe Fairchild 670 is the grandaddy of all analog compressors. Used on too many famous recordings to list, this was a studio mainstay throughout the heyday of vacuum tube equipment in the 1950s and 60s. Its use in Bill Putnam's United Western Recorders alone accounted for numerous hit records. \u003cbr\u003e\u003cbr\u003eThis unit is not for the meek, sporting 14 transformers and 20 tubes, with a single push-pull amplification stage, using high control voltage. The 670 weighs in at over 60 lbs. but you may not want to put that extra strain on your rack, when you can show off the impressive backside of this gorgeous unit, meticulously restored by our expert tech staff.\u003cbr\u003e\u003cbr\u003eThe Fairchild 670 was originally employed for its excellent capabilities in making stereo masters for vinyl records. Dr. Rudy van Gelder was an early proponent, using it on many Blue Note pressings, as well as numerous classical records he mastered for Vox. By splitting the stereo channels into lateral and vertical segments, (via the LAT\/VERT knobs on the far right of the unit), and using two separate limiters to limit those channels, and then running them back together through a second matrixing network, the 670 allowed for maximum use of the stereo groove space, making records louder with less distortion. While you may not be mastering for vinyl with this unit today, it is still a monster stereo compressor.\u003cbr\u003e\u003cbr\u003eNo plug-in can match the sound of the original. There is only one Fairchild 670.\u003c\/p\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44449618329703,"sku":"37567","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-670-449-used-4182885_6c37ef32-301d-44f4-90b7-bdc2a6952c46.jpg?v=1787089718"},{"product_id":"fairchild-670-535-used","title":"Fairchild 670 #535 (Used)","description":"\u003cp\u003ePremium VK serviced and recapped; matching 6386 tubes, complete faceplate re-painting\/re-screening to original specs, excellent stereo alignment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe 670 is a variable-mu type compressor, using the vacuum tubes for reduction of gain right in the audio signal path, (no re-routing to a compression circuit).\u003c\/p\u003e\n\u003cp\u003eControls are paired for the left and right sides, and include a stepped Input Gain and continuously variable Threshold control, as well as a stepped 6-position switch for Attack and Release, that allow for four different combinations and two program-dependent settings. Set-screws on the back of the unit control the ratio; anywhere from 2:1 as a compressor to 30:1 as a limiter.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eHistory\u003c\/h3\u003e\n\u003cp\u003e\u003cbr\u003eThe Fairchild 670 is the grandaddy of all analog compressors. Used on too many famous recordings to list, this was a studio mainstay throughout the heyday of vacuum tube equipment in the 1950s and 60s. Its use in Bill Putnam's United Western Recorders alone accounted for numerous hit records. \u003cbr\u003e\u003cbr\u003eThis unit is not for the meek, sporting 14 transformers and 20 tubes, with a single push-pull amplification stage, using high control voltage. The 670 weighs in at over 60 lbs. but you may not want to put that extra strain on your rack, when you can show off the impressive backside of this gorgeous unit, meticulously restored by our expert tech staff.\u003cbr\u003e\u003cbr\u003eThe Fairchild 670 was originally employed for its excellent capabilities in making stereo masters for vinyl records. Dr. Rudy van Gelder was an early proponent, using it on many Blue Note pressings, as well as numerous classical records he mastered for Vox. By splitting the stereo channels into lateral and vertical segments, (via the LAT\/VERT knobs on the far right of the unit), and using two separate limiters to limit those channels, and then running them back together through a second matrixing network, the 670 allowed for maximum use of the stereo groove space, making records louder with less distortion. While you may not be mastering for vinyl with this unit today, it is still a monster stereo compressor.\u003cbr\u003e\u003cbr\u003eNo plug-in can match the sound of the original. There is only one Fairchild 670.\u003c\/p\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44449641889895,"sku":"37902","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild_670_cat_dc090ecc-386f-4198-9154-420ed65226ec.jpg?v=1787089800"},{"product_id":"fairchild-670-stereo-compressor-limiter-490-vintage","title":"Fairchild 670 Stereo Compressor\/Limiter #490 (Vintage)","description":"\u003cp\u003eThe \u003cb\u003eFairchild 670\u003c\/b\u003e is a variable-mu type compressor, using the vacuum tubes for reduction of gain right in the audio signal path, (no re-routing to a compression circuit).\u003cbr\u003e\u003cbr\u003eControls are paired for the left and right sides, and include a stepped Input Gain and continuously variable Threshold control, as well as a stepped 6-position switch for Attack and Release, that allow for four different combinations and two program-dependent settings. Set-screws on the back of the unit control the ratio; anywhere from 2:1 as a compressor to 30:1 as a limiter.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eControls\u003c\/b\u003e (all controls are dual) \u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eInput Impedance: 600 \u003c\/li\u003e\r\n\u003cli\u003eOutput Impedance: 600 \u003c\/li\u003e\r\n\u003cli\u003eInput Levels: Normal line levels (+4 or +8 VU) \u003c\/li\u003e\r\n\u003cli\u003eOutput Level: +4 or +8 dbm line (+27 dbm after clipping point) \u003c\/li\u003e\r\n\u003cli\u003eGain:16db \u003c\/li\u003e\r\n\u003cli\u003eFrequency Response: 20 cycles to 20kc \u003c\/li\u003e\r\n\u003cli\u003eNoise Level: 70 db below +4dbm \u003c\/li\u003e\r\n\u003cli\u003eLimiting Noises: No audible thumps produced \u003c\/li\u003e\r\n\u003cli\u003eIntermodulation or Harmonic Distortion: less than 1% at any level up to +18dbm output (no limiting); less than 1% at 10db limiting and +12dbm output \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cb\u003eAttack time\u003c\/b\u003e (adjustable) \u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e.2 milliseconds in positions 1, 2 and 6 \u003c\/li\u003e\r\n\u003cli\u003e.4 milliseconds in positions 3 and 5 \u003c\/li\u003e\r\n\u003cli\u003e.8 milliseconds in position 4 \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cb\u003eRelease time\u003c\/b\u003e (from 10db of limiting) \u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003ePosition 1: .3 seconds \u003c\/li\u003e\r\n\u003cli\u003ePosition 2: .8 seconds \u003c\/li\u003e\r\n\u003cli\u003ePosition 3: 2 seconds for multiple peaks \u003c\/li\u003e\r\n\u003cli\u003ePosition 4: 5 seconds \u003c\/li\u003e\r\n\u003cli\u003ePosition 5: Automatic function of program material: 2 seconds for individual peaks, 10 seconds for multiple peaks \u003c\/li\u003e\r\n\u003cli\u003ePosition 6: \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cb\u003eAutomatic function\u003c\/b\u003e of program material: \u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e.3 seconds for individual peaks\u003c\/li\u003e\r\n\u003cli\u003e10 seconds for multiple peaks\u003c\/li\u003e\r\n\u003cli\u003e25 seconds for consistently high program level. \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cb\u003eCompression Ratio\u003c\/b\u003e: \u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eA function of the amount of limiting as well as setting of the two threshold controls which can be set to operate at ratios from 1:1 to 1:20 \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cb\u003eControls\u003c\/b\u003e: \u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eInput Gain control Step attenuator; 1 db per step \u003c\/li\u003e\r\n\u003cli\u003eThreshold Control continuously variable \u003c\/li\u003e\r\n\u003cli\u003eTime Constant Switch 6 positions, so as to provide fixed and variable time constants for any type of program material. \u003c\/li\u003e\r\n\u003cli\u003eMetering Switch 3 positions, so as to measure plate current of each of the control tubes, or as a limiting indicator \u003c\/li\u003e\r\n\u003cli\u003eOn-Off switch \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eThe Fairchild 670 is the grandaddy of all analog compressors. Used on too many famous recordings to list, this was a studio mainstay throughout the heyday of vacuum tube equipment in the 1950s and 60s. Its use in Bill Putnam's United Western Recorders \u003ci\u003ealone\u003c\/i\u003e accounted for numerous hit records.\u003c\/p\u003e\r\n\r\n\u003cp\u003eThis unit is not for the meek, sporting 14 transformers and 20 tubes, with a single push-pull amplification stage, using high control voltage. The 670 weighs in at over 60 lbs. but you may not want to put that extra strain on your rack, when you can show off the impressive backside of this gorgeous unit, meticulously restored by our expert tech staff.\u003c\/p\u003e\r\n\r\n\u003cp\u003eThe Fairchild 670 was originally employed for its excellent capabilities in making stereo masters for vinyl records. By splitting the stereo channels into lateral and vertical segments, (via the LAT\/VERT knobs on the far right of the unit), and using two separate limiters to limit those channels, and then running them back together through a second matrixing network, the 670 allowed for maximum use of the stereo groove space, making records louder with less distortion. Listen to Rudy van Gelder's work on Blue Note or Vox Records for examples.\u003c\/p\u003e\r\n\r\n\u003cp\u003eWhile you may not be mastering for vinyl with this unit today, it is still a monster stereo compressor. No plug-in can match the sound of the original. There is only one Fairchild 670.\u003c\/p\u003e\r\n\u003cp\u003eVisit our \u003ca href=\"https:\/\/vintageking.com\/fairchild-660-670-compressor-limiter\"\u003eFairchild 660\/670 page\u003c\/a\u003e for more information.\u003c\/p\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44449999683687,"sku":"62415","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/brokered_62415_1_5b3a4ba4-2dbf-4fc7-95de-9e77fdc0435b.jpg?v=1787091268"},{"product_id":"fairchild-666-compressorlimiter-469-vintage","title":"Fairchild 666 Compressor\/Limiter #469 (Vintage)","description":"The \u003cstrong\u003eFairchild 666\u003c\/strong\u003e is a rare compressor from the makers of the famous 660 and 670 models. While those models are 'delta-mu' style compressors, the 666 model was Fairchild's answer to the Teletronix LA-2A opto-compressor.\u003cbr\u003eThe 666 is a hybrid design using tubes for the audio path and solid state circuitry for the 'Auto-Ten' noise gate. Unique sound as a vocal compressor; the 666 was an early acquisition of Abbey Road studios, and was used on many recordings by the Hollies and Gerry and the Pacemakers, and possibly some Beatles records as well. The 666 was also a regular at Motown Studios during their Detroit heyday.\u003cbr\u003eControls include continuously variable knobs for Compression and 'Auto-Ten' (an automatic attenuator\/noise gate), and a stepped attenuator for Line Gain from 0 to 40 db, in 5db increments. Also has two continuously-variable settings for the release times on the compression and auto attenuation, adjustable by screwdriver. Auto-Ten has its own on\/off switch on the back of the unit.","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44450045722727,"sku":"63671","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-666-compressorlimiter-469-vintage-6891075_c305752e-d440-4f7e-bacb-5f3d82114be6.jpg?v=1787091460"},{"product_id":"fairchild-670-stereo-compressorlimiter-586-vintage","title":"Fairchild 670 Stereo Compressor\/Limiter #586 (Vintage)","description":"The \u003cstrong\u003eFairchild 670\u003c\/strong\u003e is a variable-mu type compressor, using the vacuum tubes for reduction of gain right in the audio signal path, (no re-routing to a compression circuit).\u003cbr\u003e\u003cbr\u003eControls are paired for the left and right sides, and include a stepped Input Gain and continuously variable Threshold control, as well as a stepped 6-position switch for Attack and Release, that allow for four different combinations and two program-dependent settings. Set-screws on the back of the unit control the ratio; anywhere from 2:1 as a compressor to 30:1 as a limiter.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eControls\u003c\/strong\u003e (all controls are dual) \u003cbr\u003e\u003cul\u003e\n\u003cli\u003eInput Impedance: 600 \u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 600 \u003c\/li\u003e\n\u003cli\u003eInput Levels: Normal line levels (+4 or +8 VU) \u003c\/li\u003e\n\u003cli\u003eOutput Level: +4 or +8 dbm line (+27 dbm after clipping point) \u003c\/li\u003e\n\u003cli\u003eGain:16db \u003c\/li\u003e\n\u003cli\u003eFrequency Response: 20 cycles to 20kc \u003c\/li\u003e\n\u003cli\u003eNoise Level: 70 db below +4dbm \u003c\/li\u003e\n\u003cli\u003eLimiting Noises: No audible thumps produced \u003c\/li\u003e\n\u003cli\u003eIntermodulation or Harmonic Distortion: less than 1% at any level up to +18dbm output (no limiting); less than 1% at 10db limiting and +12dbm output \u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eAttack time\u003c\/strong\u003e (adjustable) \u003cbr\u003e\u003cul\u003e\n\u003cli\u003e.2 milliseconds in positions 1, 2 and 6 \u003c\/li\u003e\n\u003cli\u003e.4 milliseconds in positions 3 and 5 \u003c\/li\u003e\n\u003cli\u003e.8 milliseconds in position 4 \u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eRelease time\u003c\/strong\u003e (from 10db of limiting) \u003cbr\u003e\u003cul\u003e\n\u003cli\u003ePosition 1: .3 seconds \u003c\/li\u003e\n\u003cli\u003ePosition 2: .8 seconds \u003c\/li\u003e\n\u003cli\u003ePosition 3: 2 seconds for multiple peaks \u003c\/li\u003e\n\u003cli\u003ePosition 4: 5 seconds \u003c\/li\u003e\n\u003cli\u003ePosition 5: Automatic function of program material: 2 seconds for individual peaks, 10 seconds for multiple peaks \u003c\/li\u003e\n\u003cli\u003ePosition 6: \u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eAutomatic function\u003c\/strong\u003e of program material: \u003cbr\u003e\u003cul\u003e\n\u003cli\u003e.3 seconds for individual peaks\u003c\/li\u003e\n\u003cli\u003e10 seconds for multiple peaks\u003c\/li\u003e\n\u003cli\u003e25 seconds for consistently high program level. \u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eCompression Ratio\u003c\/strong\u003e: \u003cbr\u003e\u003cul\u003e\u003cli\u003eA function of the amount of limiting as well as setting of the two threshold controls which can be set to operate at ratios from 1:1 to 1:20 \u003c\/li\u003e\u003c\/ul\u003e\u003cstrong\u003eControls\u003c\/strong\u003e: \u003cbr\u003e\u003cul\u003e\n\u003cli\u003eInput Gain control Step attenuator; 1 db per step \u003c\/li\u003e\n\u003cli\u003eThreshold Control continuously variable \u003c\/li\u003e\n\u003cli\u003eTime Constant Switch 6 positions, so as to provide fixed and variable time constants for any type of program material. \u003c\/li\u003e\n\u003cli\u003eMetering Switch 3 positions, so as to measure plate current of each of the control tubes, or as a limiting indicator \u003c\/li\u003e\n\u003cli\u003eOn-Off switch \u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003eThe Fairchild 670 is the grandaddy of all analog compressors. Used on too many famous recordings to list, this was a studio mainstay throughout the heyday of vacuum tube equipment in the 1950s and 60s. Its use in Bill Putnam's United Western Recorders \u003cem\u003ealone\u003c\/em\u003e accounted for numerous hit records. \u003cbr\u003e\u003cbr\u003eThis unit is not for the meek, sporting 14 transformers and 20 tubes, with a single push-pull amplification stage, using high control voltage. The 670 weighs in at over 60 lbs. but you may not want to put that extra strain on your rack, when you can show off the impressive backside of this gorgeous unit, meticulously restored by our expert tech staff.\u003cbr\u003e\u003cbr\u003eThe Fairchild 670 was originally employed for its excellent capabilities in making stereo masters for vinyl records. By splitting the stereo channels into lateral and vertical segments, (via the LAT\/VERT knobs on the far right of the unit), and using two separate limiters to limit those channels, and then running them back together through a second matrixing network, the 670 allowed for maximum use of the stereo groove space, making records louder with less distortion. Listen to Rudy van Gelder's work on Blue Note or Vox Records for examples. \u003cbr\u003e\u003cbr\u003eWhile you may not be mastering for vinyl with this unit today, it is still a monster stereo compressor. No plug-in can match the sound of the original. There is only one Fairchild 670.","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44450084618343,"sku":"60371","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-670-stereo-compressorlimiter-586-vintage-7397641_8d3e9ba5-d284-4e73-80ab-d9be6a332ca8.jpg?v=1787091637"},{"product_id":"fairchild-670-stereo-compressor-limiter-310-vintage","title":"Fairchild 670 Stereo Compressor\/Limiter #310 (Vintage)","description":"\u003cp\u003eThe \u003cstrong\u003eFairchild 670\u003c\/strong\u003e is a variable-mu type compressor, using the vacuum tubes for reduction of gain right in the audio signal path, (no re-routing to a compression circuit).\u003cbr\u003e\u003cbr\u003eControls are paired for the left and right sides, and include a stepped Input Gain and continuously variable Threshold control, as well as a stepped 6-position switch for Attack and Release, that allow for four different combinations and two program-dependent settings. Set-screws on the back of the unit control the ratio; anywhere from 2:1 as a compressor to 30:1 as a limiter.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eControls\u003c\/strong\u003e (all controls are dual)\u003c\/p\u003e \u003cul\u003e \u003cli\u003eInput Impedance: 600\u003c\/li\u003e \u003cli\u003eOutput Impedance: 600\u003c\/li\u003e \u003cli\u003eInput Levels: Normal line levels (+4 or +8 VU)\u003c\/li\u003e \u003cli\u003eOutput Level: +4 or +8 dbm line (+27 dbm after clipping point)\u003c\/li\u003e \u003cli\u003eGain:16db\u003c\/li\u003e \u003cli\u003eFrequency Response: 20 cycles to 20kc\u003c\/li\u003e \u003cli\u003eNoise Level: 70 db below +4dbm\u003c\/li\u003e \u003cli\u003eLimiting Noises: No audible thumps produced\u003c\/li\u003e \u003cli\u003eIntermodulation or Harmonic Distortion: less than 1% at any level up to +18dbm output (no limiting); less than 1% at 10db limiting and +12dbm output\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eAttack time\u003c\/strong\u003e (adjustable)\u003c\/p\u003e \u003cul\u003e \u003cli\u003e.2 milliseconds in positions 1, 2 and 6\u003c\/li\u003e \u003cli\u003e.4 milliseconds in positions 3 and 5\u003c\/li\u003e \u003cli\u003e.8 milliseconds in position 4\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eRelease time\u003c\/strong\u003e (from 10db of limiting)\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePosition 1: .3 seconds\u003c\/li\u003e \u003cli\u003ePosition 2: .8 seconds\u003c\/li\u003e \u003cli\u003ePosition 3: 2 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003ePosition 4: 5 seconds\u003c\/li\u003e \u003cli\u003ePosition 5: Automatic function of program material: 2 seconds for individual peaks, 10 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003ePosition 6:\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eAutomatic function\u003c\/strong\u003e of program material:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e.3 seconds for individual peaks\u003c\/li\u003e \u003cli\u003e10 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003e25 seconds for consistently high program level.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompression Ratio\u003c\/strong\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eA function of the amount of limiting as well as setting of the two threshold controls which can be set to operate at ratios from 1:1 to 1:20\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eControls\u003c\/strong\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eInput Gain control Step attenuator; 1 db per step\u003c\/li\u003e \u003cli\u003eThreshold Control continuously variable\u003c\/li\u003e \u003cli\u003eTime Constant Switch 6 positions, so as to provide fixed and variable time constants for any type of program material.\u003c\/li\u003e \u003cli\u003eMetering Switch 3 positions, so as to measure plate current of each of the control tubes, or as a limiting indicator\u003c\/li\u003e \u003cli\u003eOn-Off switch\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe Fairchild 670 is the grandaddy of all analog compressors. Used on too many famous recordings to list, this was a studio mainstay throughout the heyday of vacuum tube equipment in the 1950s and 60s. Its use in Bill Putnam's United Western Recorders \u003cem\u003ealone\u003c\/em\u003e accounted for numerous hit records.\u003c\/p\u003e \u003cp\u003eThis unit is not for the meek, sporting 14 transformers and 20 tubes, with a single push-pull amplification stage, using high control voltage. The 670 weighs in at over 60 lbs. but you may not want to put that extra strain on your rack, when you can show off the impressive backside of this gorgeous unit, meticulously restored by our expert tech staff.\u003c\/p\u003e \u003cp\u003eThe Fairchild 670 was originally employed for its excellent capabilities in making stereo masters for vinyl records. By splitting the stereo channels into lateral and vertical segments, (via the LAT\/VERT knobs on the far right of the unit), and using two separate limiters to limit those channels, and then running them back together through a second matrixing network, the 670 allowed for maximum use of the stereo groove space, making records louder with less distortion. Listen to Rudy van Gelder's work on Blue Note or Vox Records for examples.\u003c\/p\u003e \u003cp\u003eWhile you may not be mastering for vinyl with this unit today, it is still a monster stereo compressor. No plug-in can match the sound of the original. There is only one Fairchild 670.\u003c\/p\u003e \u003cp\u003eVisit our \u003ca href=\"https:\/\/vintageking.com\/fairchild-660-670-compressor-limiter\"\u003eFairchild 660\/670 page\u003c\/a\u003e for more information.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eVARIABLE-MU® is a registered trademark of Manley Laboratories, Inc.\u003c\/em\u003e\u003c\/p\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44450323562599,"sku":"101524","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-670-stereo-compressor-limiter-310-vintage_101524_1_754d2034-7de2-48ae-82fd-f522fab32fed.jpg?v=1787092588"},{"product_id":"fairchild-670-stereo-compressor-limiter-vintage","title":"Fairchild 670 Stereo Compressor\/Limiter (Vintage)","description":"\u003cp\u003eThe \u003cstrong\u003eFairchild 670\u003c\/strong\u003e is a variable-mu type compressor, using the vacuum tubes for reduction of gain right in the audio signal path, (no re-routing to a compression circuit). This unit is in great condition, having been fully serviced two years ago by Charlie Boilis.\u003cbr\u003e\u003cbr\u003eControls are paired for the left and right sides, and include a stepped Input Gain and continuously variable Threshold control, as well as a stepped 6-position switch for Attack and Release, that allow for four different combinations and two program-dependent settings. Set-screws on the back of the unit control the ratio; anywhere from 2:1 as a compressor to 30:1 as a limiter.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eControls\u003c\/strong\u003e (all controls are dual)\u003c\/p\u003e \u003cul\u003e \u003cli\u003eInput Impedance: 600\u003c\/li\u003e \u003cli\u003eOutput Impedance: 600\u003c\/li\u003e \u003cli\u003eInput Levels: Normal line levels (+4 or +8 VU)\u003c\/li\u003e \u003cli\u003eOutput Level: +4 or +8 dbm line (+27 dbm after clipping point)\u003c\/li\u003e \u003cli\u003eGain:16db\u003c\/li\u003e \u003cli\u003eFrequency Response: 20 cycles to 20kc\u003c\/li\u003e \u003cli\u003eNoise Level: 70 db below +4dbm\u003c\/li\u003e \u003cli\u003eLimiting Noises: No audible thumps produced\u003c\/li\u003e \u003cli\u003eIntermodulation or Harmonic Distortion: less than 1% at any level up to +18dbm output (no limiting); less than 1% at 10db limiting and +12dbm output\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eAttack time\u003c\/strong\u003e (adjustable)\u003c\/p\u003e \u003cul\u003e \u003cli\u003e.2 milliseconds in positions 1, 2 and 6\u003c\/li\u003e \u003cli\u003e.4 milliseconds in positions 3 and 5\u003c\/li\u003e \u003cli\u003e.8 milliseconds in position 4\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eRelease time\u003c\/strong\u003e (from 10db of limiting)\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePosition 1: .3 seconds\u003c\/li\u003e \u003cli\u003ePosition 2: .8 seconds\u003c\/li\u003e \u003cli\u003ePosition 3: 2 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003ePosition 4: 5 seconds\u003c\/li\u003e \u003cli\u003ePosition 5: Automatic function of program material: 2 seconds for individual peaks, 10 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003ePosition 6:\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eAutomatic function\u003c\/strong\u003e of program material:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e.3 seconds for individual peaks\u003c\/li\u003e \u003cli\u003e10 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003e25 seconds for consistently high program level.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompression Ratio\u003c\/strong\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eA function of the amount of limiting as well as setting of the two threshold controls which can be set to operate at ratios from 1:1 to 1:20\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eControls\u003c\/strong\u003e:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eInput Gain control Step attenuator; 1 db per step\u003c\/li\u003e \u003cli\u003eThreshold Control continuously variable\u003c\/li\u003e \u003cli\u003eTime Constant Switch 6 positions, so as to provide fixed and variable time constants for any type of program material.\u003c\/li\u003e \u003cli\u003eMetering Switch 3 positions, so as to measure plate current of each of the control tubes, or as a limiting indicator\u003c\/li\u003e \u003cli\u003eOn-Off switch\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe Fairchild 670 is the grandaddy of all analog compressors. Used on too many famous recordings to list, this was a studio mainstay throughout the heyday of vacuum tube equipment in the 1950s and 60s. Its use in Bill Putnam's United Western Recorders \u003cem\u003ealone\u003c\/em\u003e accounted for numerous hit records.\u003c\/p\u003e \u003cp\u003eThis unit is not for the meek, sporting 14 transformers and 20 tubes, with a single push-pull amplification stage, using high control voltage. The 670 weighs in at over 60 lbs. but you may not want to put that extra strain on your rack, when you can show off the impressive backside of this gorgeous unit, meticulously restored by our expert tech staff.\u003c\/p\u003e \u003cp\u003eThe Fairchild 670 was originally employed for its excellent capabilities in making stereo masters for vinyl records. By splitting the stereo channels into lateral and vertical segments, (via the LAT\/VERT knobs on the far right of the unit), and using two separate limiters to limit those channels, and then running them back together through a second matrixing network, the 670 allowed for maximum use of the stereo groove space, making records louder with less distortion. Listen to Rudy van Gelder's work on Blue Note or Vox Records for examples.\u003c\/p\u003e \u003cp\u003eWhile you may not be mastering for vinyl with this unit today, it is still a monster stereo compressor. No plug-in can match the sound of the original. There is only one Fairchild 670.\u003c\/p\u003e \u003cp\u003eVisit our \u003ca href=\"https:\/\/vintageking.com\/fairchild-660-670-compressor-limiter\"\u003eFairchild 660\/670 page\u003c\/a\u003e for more information.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eVARIABLE-MU® is a registered trademark of Manley Laboratories, Inc.\u003c\/em\u003e\u003c\/p\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44450350366823,"sku":"109118","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/brokered_109118_1_f41cbd7c-2ca3-4331-b214-55acb86f43a9.jpg?v=1787092700"},{"product_id":"fairchild-660-mono-compressor-limiter-274-vintage","title":"Fairchild 660 Mono Compressor\/Limiter #274 (Vintage)","description":"\u003cp\u003eThe \u003cstrong\u003eFairchild 660\u003c\/strong\u003e is the mono version of the legendary Fairchild 670, a variable-mu type compressor, using vacuum tubes for reduction of gain right in the audio signal path, (no re-routing to a compression circuit).\u003c\/p\u003e \u003cp\u003eControls include a stepped Input Gain and continuously variable Threshold control, as well as a stepped 6-position switch for Attack and Release, that allow for four different combinations and two program-dependent settings. Set-screws on the back of the unit control the ratio; anywhere from 2:1 as a compressor to 30:1 as a limiter.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eControls\u003c\/strong\u003e \u003c\/p\u003e\u003cul\u003e \u003cli\u003eInput Impedance: 600\u003c\/li\u003e \u003cli\u003eOutput Impedance: 600\u003c\/li\u003e \u003cli\u003eInput Levels: Normal line levels (+4 or +8 VU)\u003c\/li\u003e \u003cli\u003eOutput Level: +4 or +8 dbm line (+27 dbm after clipping point) \u003c\/li\u003e \u003cli\u003eGain:16db \u003c\/li\u003e \u003cli\u003eFrequency Response: 20 cycles to 20kc\u003c\/li\u003e \u003cli\u003eNoise Level: 70 db below +4dbm\u003c\/li\u003e \u003cli\u003eLimiting Noises: No audible thumps produced \u003c\/li\u003e \u003cli\u003eIntermodulation or Harmonic Distortion: less than 1% at any level up to +18dbm output (no limiting); less than 1% at 10db limiting and +12dbm output \u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eAttack time\u003c\/strong\u003e (adjustable) \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e.2 milliseconds in positions 1, 2 and 6 \u003c\/li\u003e \u003cli\u003e.4 milliseconds in positions 3 and 5 \u003c\/li\u003e \u003cli\u003e.8 milliseconds in position 4\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eRelease time\u003c\/strong\u003e (from 10db of limiting) \u003cbr\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePosition 1: .3 seconds \u003c\/li\u003e \u003cli\u003ePosition 2: .8 seconds \u003c\/li\u003e \u003cli\u003ePosition 3: 2 seconds for multiple peaks \u003c\/li\u003e \u003cli\u003ePosition 4: 5 seconds \u003c\/li\u003e \u003cli\u003ePosition 5: Automatic function of program material: 2 seconds for individual peaks, 10 seconds for multiple peaks \u003c\/li\u003e \u003cli\u003ePosition 6: \u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eAutomatic function\u003c\/strong\u003e of program material: \u003c\/p\u003e\u003cul\u003e \u003cli\u003e.3 seconds for individual peaks\u003c\/li\u003e \u003cli\u003e10 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003e25 seconds for consistently high program level. \u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eCompression Ratio\u003c\/strong\u003e: \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eA function of the amount of limiting as well as setting of the two threshold controls which can be set to operate at ratios from 1:1 to 1:20 \u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eControls\u003c\/strong\u003e: \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInput Gain control Step attenuator; 1 db per step \u003c\/li\u003e \u003cli\u003eThreshold Control continuously variable \u003c\/li\u003e \u003cli\u003eTime Constant Switch 6 positions, so as to provide fixed and variable time constants for any type of program material. \u003c\/li\u003e \u003cli\u003eMetering Switch 3 positions, so as to measure plate current of each of the control tubes, or as a limiting indicator \u003c\/li\u003e \u003cli\u003eOn-Off switch \u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003eThe Fairchild 670 is the grandaddy of all analog compressors. Used on too many famous recordings to list, this was a studio mainstay throughout the heyday of vacuum tube equipment in the 1950s and 60s. Its use in Bill Putnam's United Western Recorders \u003cem\u003ealone\u003c\/em\u003e accounted for numerous hit records. The single channel 660 model was used extensively at Abbey Road during the Beatles tenure.\u003c\/p\u003e \u003cp\u003eVisit our \u003ca href=\"https:\/\/vintageking.com\/fairchild-660-670-compressor-limiter\"\u003eFairchild 660\/670 page\u003c\/a\u003e for more information.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eVARIABLE-MU® is a registered trademark of Manley Laboratories, Inc.\u003c\/em\u003e\u003c\/p\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44450690170983,"sku":"110574","price":49995.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-660-mono-compressor-limiter-274-vintage_110574_1_954d736a-c5ff-49f6-80d4-4af6119e83f0.jpg?v=1787094113"},{"product_id":"fairchild-recording-equipment-670-compressor-limiter","title":"Fairchild Recording Equipment 670 Dual-Channel Compressor\/Limiter","description":"\u003cp\u003eThe \u003cstrong\u003eFairchild 670\u003c\/strong\u003e is one of the most beloved compressors ever made. The classic sound of the Fairchild 670 compressor can be heard on some of the most famous songs and albums of the 20th century. Despite its legendary status, it’s believed that only 500 to 1000 Fairchild 670s were ever produced, which explains their elusive reputation and hefty price tag. After decades of demand, Fairchild has been reborn to reissue the 670 as a pound-for-pound recreation of the original unit.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_0\"\u003eBUILT JUST LIKE THE ORIGINAL 670 COMPRESSOR\u003c\/h3\u003e\r\n\r\n\u003cp\u003eThis isn’t your average “inspired-by” model or digital recreation—this is the Fairchild 670 compressor, built exactly as it would have been in its original run and by the very company that brought it to life. That means everything that made the original so loved and versatile is present, including its characteristically fast attack and slow release times, tube-driven compression, and silky gain reduction. Capable of everything from subtle leveling to heavy pumping, the 670 is a great choice of compressor for everything from drum overheads to your mix bus.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_1\"\u003eNEW-OLD STOCK LOOKS AND PARTS\u003c\/h3\u003e\r\n\r\n\u003cp\u003eThis hand-wired reissue sports the same control layout as its predecessor, featuring six selectable time constants, individual gain and threshold controls for the left and right channels, and VU metering. At the heart of the 670 are 20 vacuum tubes and custom-made transformers, which are key to achieving the unit’s quintessential character and compression style.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_2\"\u003eTHE LEGEND CONTINUES\u003c\/h3\u003e\r\n\r\n\u003cp\u003eWith this reissue, the Fairchild 670 is poised to reach and inspire a whole new generation of artists, engineers, and producers. Check out one for yourself today to own a piece of music history. \u003c\/p\u003e\r\n\r\n\r\n\r\n\u003ch3 id=\"toc_4\"\u003eAPPLICATIONS:\u003c\/h3\u003e\r\n\r\n\u003cul\u003e\r\n\u003cli\u003eVocals\u003c\/li\u003e\r\n\u003cli\u003eDrums\u003c\/li\u003e\r\n\u003cli\u003eBass\u003c\/li\u003e\r\n\u003cli\u003eGuitars\u003c\/li\u003e\r\n\u003cli\u003eStrings\u003c\/li\u003e\r\n\u003cli\u003ePiano\u003c\/li\u003e\r\n\u003cli\u003eBrass\u003c\/li\u003e\r\n\u003cli\u003eOrchestral instruments\u003c\/li\u003e\r\n\u003cli\u003eMix bus\/mastering\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44450927116391,"sku":"191577","price":29500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-670_191577_1_a564b567-3aba-483a-826e-6555f0a75453.jpg?v=1787095131"},{"product_id":"fairchild-recording-equipment-660-compressor-limiter","title":"Fairchild Recording Equipment 660 Single-Channel Compressor\/Limiter","description":"\u003cp\u003eThe \u003cstrong\u003eFairchild 660\u003c\/strong\u003e is a single channel compressor\/limiter that has been used on many classic recordings throughout history. The world’s accepted standard for level control, the 660 is considered one of the most sought-after compressor\/limiters ever made. Its ability to inject warmth and coloration to any signal, make it a must for any producer or audio engineer. Due to the popularity of the 670, only 1000 were ever built and very few original 660 are still in working condition. Designed and built by Rein Narma and recording legend Les Paul, the 660 is back. Built to original specifications, utilizing the same tubes and custom wound transformers, point to point soldering and turret style construction. Unlike other clones, The Fairchild 660 is made as close to the original as possible today.\u003c\/p\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44451027189863,"sku":"213842","price":19500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-recording-company-660_213842_1_80f5a2ce-17cf-45e2-ab9c-399d9d52901b.jpg?v=1787095533"},{"product_id":"fairchild-recording-equipment-670-dual-channel-compressor-limiter-demo-deal","title":"Fairchild Recording Equipment 670 Dual-Channel Compressor\/Limiter (Demo Deal)","description":"\u003cp\u003eThe \u003cstrong\u003eFairchild 670\u003c\/strong\u003e is one of the most beloved compressors ever made. The classic sound of the Fairchild 670 compressor can be heard on some of the most famous songs and albums of the 20th century. Despite its legendary status, it’s believed that only 500 to 1000 Fairchild 670s were ever produced, which explains their elusive reputation and hefty price tag. After decades of demand, Fairchild has been reborn to reissue the 670 as a pound-for-pound recreation of the original unit.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_0\"\u003eBUILT JUST LIKE THE ORIGINAL 670 COMPRESSOR\u003c\/h3\u003e\r\n\r\n\u003cp\u003eThis isn’t your average “inspired-by” model or digital recreation—this is the Fairchild 670 compressor, built exactly as it would have been in its original run and by the very company that brought it to life. That means everything that made the original so loved and versatile is present, including its characteristically fast attack and slow release times, tube-driven compression, and silky gain reduction. Capable of everything from subtle leveling to heavy pumping, the 670 is a great choice of compressor for everything from drum overheads to your mix bus.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_1\"\u003eNEW-OLD STOCK LOOKS AND PARTS\u003c\/h3\u003e\r\n\r\n\u003cp\u003eThis hand-wired reissue sports the same control layout as its predecessor, featuring six selectable time constants, individual gain and threshold controls for the left and right channels, and VU metering. At the heart of the 670 are 20 vacuum tubes and custom-made transformers, which are key to achieving the unit’s quintessential character and compression style.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_2\"\u003eTHE LEGEND CONTINUES\u003c\/h3\u003e\r\n\r\n\u003cp\u003eWith this reissue, the Fairchild 670 is poised to reach and inspire a whole new generation of artists, engineers, and producers. Check out one for yourself today to own a piece of music history. \u003c\/p\u003e\r\n\r\n\r\n\r\n\u003ch3 id=\"toc_4\"\u003eAPPLICATIONS:\u003c\/h3\u003e\r\n\r\n\u003cul\u003e\r\n\u003cli\u003eVocals\u003c\/li\u003e\r\n\u003cli\u003eDrums\u003c\/li\u003e\r\n\u003cli\u003eBass\u003c\/li\u003e\r\n\u003cli\u003eGuitars\u003c\/li\u003e\r\n\u003cli\u003eStrings\u003c\/li\u003e\r\n\u003cli\u003ePiano\u003c\/li\u003e\r\n\u003cli\u003eBrass\u003c\/li\u003e\r\n\u003cli\u003eOrchestral instruments\u003c\/li\u003e\r\n\u003cli\u003eMix bus\/mastering\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44451131359335,"sku":"458906","price":25279.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-670_191577_1.jpg?v=1787095959"},{"product_id":"fairchild-670-stereo-compressor-limiter-323-vintage","title":"Fairchild 670 Stereo Compressor\/Limiter #323 (Vintage)","description":"\u003cp\u003eThe \u003cstrong\u003eFairchild 670\u003c\/strong\u003e is a variable-mu type compressor, using the vacuum tubes for reduction of gain right in the audio signal path, (no re-routing to a compression circuit). This unit is not for the meek - The 670 sports 14 transformers and 20 tubes, with a single push\/pull amplification stage, using high control voltage. The 670 weighs in at over 60 lb, however, you may not want to put that extra strain on your rack when you can show off the impressive backside of this gorgeous unit, meticulously restored by our expert tech staff.\u003c\/p\u003e  \u003cp\u003eThe Fairchild 670 was originally employed for its excellent capabilities in making stereo masters for vinyl records. By splitting the stereo channels into lateral and vertical segments, (via the LAT\/VERT knobs on the far right of the unit), and using two separate limiters to limit those channels, and then running them back together through a second matrixing network, the 670 allowed for maximum use of the stereo groove space, making records louder with less distortion. Listen to Rudy van Gelder's legendary work on Blue Note or Vox Records for examples. While you may not be mastering for vinyl with this unit today, it is still a monster stereo compressor. No plug-in can match the sound of the original. There is only one Fairchild 670.\u003c\/p\u003e  \u003cp\u003eCheck out our \u003ca href=\"https:\/\/vintageking.com\/fairchild-660-670-compressor-limiter\"\u003ePro Audio Hall of Fame\u003c\/a\u003e to learn more about this legendary piece of gear.\u003c\/p\u003e  \u003ch3 id=\"toc_0\"\u003eSETTINGS AND CONTROLS (ALL DUAL):\u003c\/h3\u003e  \u003cp\u003eControls are paired for the left and right sides, and include a stepped Input Gain and continuously variable Threshold control, as well as a stepped 6-position switch for Attack and Release, that allow for four different combinations and two program-dependent settings. Set-screws on the back of the unit control the ratio; anywhere from 2:1 as a compressor to 30:1 as a limiter.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eATTACK TIME\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \u003cli\u003e0.2 milliseconds in positions 1, 2 and 6\u003c\/li\u003e \u003cli\u003e0.4 milliseconds in positions 3 and 5\u003c\/li\u003e \u003cli\u003e0.8 milliseconds in position 4\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eRELEASE TIME (FROM 10 DB OF LIMITING)\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \u003cli\u003ePosition 1: 0.3 seconds\u003c\/li\u003e \u003cli\u003ePosition 2: 0.8 seconds\u003c\/li\u003e \u003cli\u003ePosition 3: 2 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003ePosition 4: 5 seconds\u003c\/li\u003e \u003cli\u003ePosition 5: 2 sec, 10 sec for multiple peaks\u003c\/li\u003e \u003cli\u003ePosition 6: 0.3 sec, 10 sec for multiple peaks, 25 sec across similar levels\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eAUTOMATIC FUNCTION OF PROGRAM MATERIAL\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \u003cli\u003e0.3 seconds for individual peaks\u003c\/li\u003e \u003cli\u003e10 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003e25 seconds for consistently high program level\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eCOMPRESSION RATIO\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \u003cli\u003eA function of the amount of limiting as well as setting of the two threshold controls which can be set to operate at ratios from 1:1 to 1:20\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eCONTROLS\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \u003cli\u003eInput Gain Control: step attenuator; 1 dB per step\u003c\/li\u003e \u003cli\u003eThreshold Control: continuously variable\u003c\/li\u003e \u003cli\u003eTime Constant Switch: 6 positions, so as to provide fixed and variable time constants for any type of program material\u003c\/li\u003e \u003cli\u003eMetering Switch: 3 positions, so as to measure plate current of each of the control tubes, or as a limiting indicator\u003c\/li\u003e \u003cli\u003eOn\/Off switch\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003cstrong\u003eSPECS\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \u003cli\u003eInput impedance: 600 ohms\u003c\/li\u003e \u003cli\u003eOutput impedance: 600 ohms\u003c\/li\u003e \u003cli\u003eInput levels: Normal line levels (+4 or +8 VU)\u003c\/li\u003e \u003cli\u003eOutput level: +4 or +8 dBm line (+27 dBm after clipping point)\u003c\/li\u003e \u003cli\u003eGain: 16 dB\u003c\/li\u003e \u003cli\u003eFrequency response: 20 cycles to 20kc\u003c\/li\u003e \u003cli\u003eNoise Level: 70 dB below +4 dBm\u003c\/li\u003e \u003cli\u003eLimiting Noises: No audible thumps produced\u003c\/li\u003e \u003cli\u003eIntermodulation or harmonic distortion: less than 1% at any level up to +18 dBm output (no limiting); less than 1% at 10 dB limiting and +12 dBm output\u003c\/li\u003e \u003c\/ul\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44451328589927,"sku":"485160","price":135000.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-670-stereo-compressor-limiter-323-vintage_485160_1.jpg?v=1787096809"},{"product_id":"fairchild-660-mono-compressor-limiter-567-vintage","title":"Fairchild 660 Mono Compressor\/Limiter #567 (Vintage)","description":"\u003cp\u003eThe \u003cstrong\u003eFairchild 660\u003c\/strong\u003e is a mono version of the 670 variable-mu type compressor, using the vacuum tubes for reduction of gain right in the audio signal path, (no re-routing to a compression circuit). The original design was built around a series of RCA 6386 tubes. Approximately 800 of these were manufactured. The first unit was sold to fellow New Jersey resident Rudy Van Gelder, who made great use of the compressor when cutting lacquer masters for Blue Note jazz records and Vox classical records. The second unit went to Olmsted Sound Studios in New York, where Jimi Hendrix would record a decade later. The third unit went to guitar legend Les Paul, another Jersey neighbor and audio pioneer.\u003c\/p\u003e \u003cp\u003eThe essence of the Fairchild 660\/670 is very fast attack and slow release times. The fast attack was necessary in its role as a broadcast limiter, protecting the transmission tower from explosive transients that could burn up a transformer. This character was also well suited for mastering mono records.\u003c\/p\u003e \u003cp\u003eCheck out our \u003ca href=\"https:\/\/vintageking.com\/fairchild-660-670-compressor-limiter\"\u003ePro Audio Hall of Fame\u003c\/a\u003e to learn more about this legendary piece of gear.\u003c\/p\u003e \u003ch3 id=\"toc_0\"\u003eSETTINGS AND CONTROLS\u003c\/h3\u003e \u003cp\u003eControls include a stepped Input Gain and continuously variable Threshold control, as well as a stepped 6-position switch for Attack and Release, that allow for four different combinations and two program-dependent settings. Set-screws on the back of the unit control the ratio; anywhere from 2:1 as a compressor to 30:1 as a limiter.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eATTACK TIME\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e0.2 milliseconds in positions 1, 2 and 6\u003c\/li\u003e \u003cli\u003e0.4 milliseconds in positions 3 and 5\u003c\/li\u003e \u003cli\u003e0.8 milliseconds in position 4\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eRELEASE TIME (FROM 10 DB OF LIMITING)\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePosition 1: 0.3 seconds\u003c\/li\u003e \u003cli\u003ePosition 2: 0.8 seconds\u003c\/li\u003e \u003cli\u003ePosition 3: 2 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003ePosition 4: 5 seconds\u003c\/li\u003e \u003cli\u003ePosition 5: 2 sec, 10 sec for multiple peaks\u003c\/li\u003e \u003cli\u003ePosition 6: 0.3 sec, 10 sec for multiple peaks, 25 sec across similar levels\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eAUTOMATIC FUNCTION OF PROGRAM MATERIAL\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e0.3 seconds for individual peaks\u003c\/li\u003e \u003cli\u003e10 seconds for multiple peaks\u003c\/li\u003e \u003cli\u003e25 seconds for consistently high program level\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCOMPRESSION RATIO\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eA function of the amount of limiting as well as setting of the two threshold controls which can be set to operate at ratios from 1:1 to 1:20\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCONTROLS\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eInput Gain Control: step attenuator; 1 dB per step\u003c\/li\u003e \u003cli\u003eThreshold Control: continuously variable\u003c\/li\u003e \u003cli\u003eTime Constant Switch: 6 positions, so as to provide fixed and variable time constants for any type of program material\u003c\/li\u003e \u003cli\u003eMetering Switch: 3 positions, so as to measure plate current of each of the control tubes, or as a limiting indicator\u003c\/li\u003e \u003cli\u003eOn\/Off switch\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eSPECS\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eInput impedance: 600 ohms\u003c\/li\u003e \u003cli\u003eOutput impedance: 600 ohms\u003c\/li\u003e \u003cli\u003eInput levels: Normal line levels (+4 or +8 VU)\u003c\/li\u003e \u003cli\u003eOutput level: +4 or +8 dBm line (+27 dBm after clipping point)\u003c\/li\u003e \u003cli\u003eGain: 16 dB\u003c\/li\u003e \u003cli\u003eFrequency response: 20 cycles to 20kc\u003c\/li\u003e \u003cli\u003eNoise Level: 70 dB below +4 dBm\u003c\/li\u003e \u003cli\u003eLimiting Noises: No audible thumps produced\u003c\/li\u003e \u003cli\u003eIntermodulation or harmonic distortion: less than 1% at any level up to +18 dBm output (no limiting); less than 1% at 10 dB limiting and +12 dBm output\u003c\/li\u003e \u003c\/ul\u003e","brand":"Fairchild","offers":[{"title":"Default Title","offer_id":44451395436647,"sku":"492670","price":89995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/fairchild-660-mono-compressor-limiter-567-vintage_492670_1.jpg?v=1787097078"}],"url":"https:\/\/vintageking1.myshopify.com\/collections\/fairchild.oembed","provider":"VINTAGE KING AUDIO","version":"1.0","type":"link"}